Breast Pump Inserts for Perfect Fit: Our 10-pack of breast pump inserts are designed to provide a perfect fit for portable breast pumps. With sizes ranging from 13mm to 21mm, you can choose the insert that fits comfortably and securely for your specific needs. Improved Comfort and Efficiency: These breast pump inserts help improve the comfort and efficiency of your breastfeeding experience. By achieving a better fit, they can improve milk production and reduce discomfort during pumping. Easy to Use: Installing these breast pump inserts into your portable breast pumps is simple and hassle-free. Simply select the desired size from the set and place it inside the flange, ensuring it fits snugly and suits your individual needs. Durable and Safe Materials: Made from high-quality materials, our breast pump inserts are durable and safe for both you and your baby. They are free from harmful substances and designed to withstand repeated use without compromising performance. Compatible with Various Brands: These breast pump inserts are compatible with a wide range of portable breast pumps, making them versatile and practical. Whether you use a specific brand or have multiple pumps, our inserts can be adapted to fit your pumping needs.